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OpenStudy (anonymous):
A ball is thrown from a height of 157 feet with an initial downward velocity of 9ft/s. The ball's eight h (in feet) after t seconds is given by the following. h=147-9t-16t^2 How long after the ball is thrown does it hit the ground? Round answers to the nearest hundredth
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OpenStudy (anonymous):
@hartnn
OpenStudy (anonymous):
\[-16t^2-9t+147=0\] solve for \(t\)
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